Fix binary sensor translations for carbon_monoxide

[iMicknl]

Proposed change

While developing a custom component, I noticed that the state key for carbon_monoxide in strings.json is not correct.

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• This PR fixes or closes issue: fixes #
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[iMicknl]

Why does this change after running:
python3 -m script.translations develop --integration binary_sensor

Happy to revert manually, but would be good to understand if I need to run another command.

[balloob]

Bug in our resolving script unable to handle double references. Pushed a fix.

[frenck]

I don't see why, @balloob, pardon the ping. But you know most about this part.

[frenck]

Thanks, @iMicknl & @balloob 👍